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ZX-A90A5B5C542025年6月国际A卷 · 第 4 题
2025年6月国际A卷 · 原库模块 2 · Q4 原库参考解析
At a convention center, there are a total of 250 visitors. Each visitor is located in either room \( A \), room \( B \), or room \( C \). If one of these visitors is selected at random, the probability of selecting a visitor who is located in room \( A \) is 0.72 and the probability of selecting a visitor who is located in room \( B \) is 0.24. How many visitors are located in room \( C \)?
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